39
edits
Changes
Jump to navigation
Jump to search
Line 5:
Line 5: − + Line 30:
Line 30: + + − + + + + + + + + + − A minority belief is that petroleum is synthesized naturally by unspecified underground processes, slowly rising towards the surface for our use.+ +
Undo revision 627098 by JMR10 (Talk)
The following table<ref>Stainforth, J., Nourse, R. & Nosiara, M., 2007, ''Basin Oriented Geology - Petroleum Systems Module Course Manual''.</ref> compares the qualities of various types of petroleum:
The following table<ref>Stainforth, J., Nourse, R. & Nosiara, M., 2007, ''Basin Oriented Geology - Petroleum Systems Module Course Manual''.</ref> compares the qualities of various types of petroleum:
{| {{prettytable}}
{| class="wikitable"
| align=left bgcolor=lightgrey | '''''[[Fraction]]'''''
| align=left bgcolor=lightgrey | '''''[[Fraction]]'''''
| align=center bgcolor=lightgrey | '''''[[API]] gravity'''''
| align=center bgcolor=lightgrey | '''''[[API]] gravity'''''
| align=center | >10<sup>5</sup>
| align=center | >10<sup>5</sup>
|}
|}
== Origins ==
Oil deposits are often found in concurrence with [[natural gas]] in a variety of geological structural or [[stratigraphy|stratigraphic]] traps.
Oil deposits are often found in concurrence with [[natural gas]] in a variety of geological structural or [[stratigraphy|stratigraphic]] traps.
[[Geologists]] have deduced that petroleum is the remains of huge amounts of algal material that was laid down millions of years ago, and altered in form under high temperatures and pressures. Layers of buried plant material tend to produce [[coal]] or lignite.
Petroleum has an organic origin, being generally believed to be formed from the remains of vegetable material.
Secular [[geologists]] have contended that petroleum is the remains of huge amounts of [[alga]]l material that was laid down millions of years ago, and altered in form under high temperatures and pressures. Layers of buried plant material tend to produce [[coal]] or [[lignite]].
Creationary geologists believe that petroleum was formed from organic material buried during the [[Great flood|Noachian flood]].
Recently, researchers have shown that natural gas can form rapidly<ref>O’Donnell, E. 2005. “Rocks into Gas.” Harvard Magazine 107, no. 4.</ref>, and that some is still being formed.
This gives support to the creationary view. If this research is supported it would refute the idea that fossil fuels are diminishing.{{fact}}
==References==
{{reflist}}
[[category:geology]]
[[category:geology]]